$ 5.25 -  AT121/AT150 piezo converter

This little gadget has only 4 components.  It converts a 3-wire piezo buzzer 
(like the AT121) to a 2-wire piezo buzzer (like the AT150) if called for in your 
design.  Piezo buzzers are not included!




$24.95 - Alternating ON-OFF Switch, #1

Uses a CD4069 CMOS integrated circuit.




$18.95 - Alternating ON-OFF Switch, #2

This is the transistor version of this popular item. Uses three transistors 
instead of an integrated circuit.  Easy to construct.  Works great.




$17.95 - Audio Booster

Small pre-ampflier with low-noise transistor.  Just in case your amp needs a 
boost.




$35.00 - AA-7 - Active Antenna for HF-VHF-UHF 

Easy to construct.  Works great.  Pulls in any weak signal from 3 to 3000 
MegaHertz with the Dual Gate MosFet MFE201. Includes PCB. No enclosure provided.




$29.95 - AA-8 - Active Antenna 1-20dB, 1-30Mhz 

Transistor only version and the MPF102 JFet.  Easy to construct.  No enclosure 
or pcb (parts only) provided.




$11.95 -  Crystal Tester

Small and simple to construct Crystal Tester/Checker.  Good for most crystals.
No Printed Circuit Board, parts only.




$190.00 - Bench Top Powersupply, 30V/10A

The only powersupply you ever need!  0-6V/0-30V, 0-1A/0-10A, all switchable.  
This powersupply is so powerful it will slowly turn your regular drill.




$23.50 - Automatic Temperature Control

This item is used to control four cpu fans which are mounted on the large 
coolrib for the "Benchtop Powersupply" featured above.




$49.95 - Latching Continuity Tester

A true gem on any workbench.  This tester is very sensitive and can find both 
intermittent 'shorts' and 'opens'.  The CMOS CD4093 is used for this circuit.




$34.95 - Motorcycle Brakelight Flasher (on backorder)

Keep traffic coming from the back at a safe distance from your motorcycle.  The 
number of flashes and the flash duration are both adjustable, then the taillight 
goes solid.  There is no 'delay' of any kind.  The 4093 CMOS integrated 
ircuit is used rather than the 555 timer.  Be visible!  Be safe!




$18.95 - Motorcycle Turn Signal System

If your mechanical relay is busted, use this electronic, solid-state one to 
replace it.  The CD4049 CMOS integrated circuit is used for long-time reliable 
operation.




$24.95 - Telephone Transmitter

This telephone transmitter can receive any phone conversation on your regular FM, 
or car radio.  No battery needed.  It takes power directly from the phone line!




$24.95 - Radio Control Auto-Pilot

Presets servo in user adjustable position. When radio signal fails your aircraft 
will automatically go into "pilot" the 'preset' auto-pilot mode.




$27.95 - Radio Control Switch

The R/C Switch can be used to switch on and off anything electrical, whatever it 
is. Examples:  navigation lights, landing gear, sound systems, glowplug driver, 
bomb release, parachute, search lights, gyros, and so on.